Evaluation SECTION – A Choose the correct answer . Which is a basic electronic circuit which operates on one or more signals? (A) Boolean algebra (B) Gate (C) Fundamental gates (D) Derived gates . Which gate is called as the logical inverter?
(A) AND (B) OR ( C) NOT (D) XNOR . A + A = ? (A) A (B) O (C ) (D) A . NOR is a combination of ?
(A) NOT(OR) (B)NOT(AND) (C ) NOT(NOT) (D) NOT(NOR) . NAND is called as …… Gate (A) Fundamental Gate (B) Derived Gate (C ) Logical Gate (D) Universal gate SECTION-B Very Short Answers . What is Boolean Algebra? .
Write a short note on NAND Gate. . Draw the truth table for XOR gate. .
Write the associative laws? . What are derived gates? SECTION-C Short Answers .
Write the truth table of fundamental gates. . Write a short note on XNOR gate. .
Reason out why the NAND an NOR are called universal gates? . Give the truth table of XOR gate. .
Write the De Morgan’s law. SECTION - D Explain in detail . Explain the fundamental gates with expression and truth table. .
How AND and OR can be realized using NAND and NOR gate. . Explain the Derived gates with expression and truth table. Chapter Page - - Learning Objectives • To know the organisation of the computer components and their interconnections.
• To know the processors and their characteristics. • To know the importance of memory devices and their roles in a computer. • To explore RAM, ROM and differentiate each of them. • To know about cache memory and how it improves the performance of a computer • To know the secondary devices and their usage • To know about the ports and interfaces so that external devices can be connected .
Introduction Computer organisation deals with the hardware components of a computer system. It includes Input / Output devices, the Central Processing Unit, storage devices and primary memory. It is concerned with how the various components of computer hardware operate. It also deals with how they are interconnected to implement an architectural specification.
The term computer organisation looks similar to the term computer architecture. But, computer architecture deals with the engineering considerations involved in designing a computer. On the other hand, Computer Organisation deals with the hardware components that are transparent to the programmer. .
. Basics of Microprocessors The CPU is the major component of a computer, which performs all tasks. This is realized by the microprocessor which is an Integrated Circuit. Microprocessors were first introduced in early 1970s.
The first general purpose microprocessor, was developed by Intel Inc. The microprocessor is a programmable multipurpose silicon chip. It is driven by clock pulses. It accepts input as a binary data and after processing, it provides the output data as per the instructions stored in the memory.
A block diagram of a microprocessor based system is shown in Figure . . Input Microprocessor Output Memory Figure . A Microprocessor - Based System The microprocessor is made up of main units.
They are: • Arithmetic and Logic unit (ALU): To perform arithmetic and logical instructions based on computer instructions.